Right, FE is default if you're ignorant to the facts. All large surfaces look flat as you approach them closely. We are seeing the tangent plane approximation to the earth's true surface. If the earth's surface is on a sphere, ellipsoid, paraboloid, flat plane, a cataclysmic, or anything else, it will look like a flat plane close up. As we go higher up, it starts to clearly look less flat and more spheroidal. Mere instinctive reasoning is uninformed.